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KB Chevy 383 Hypereutectic Pistons, Flat Top, 6.0 Rod

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Specs
Sold in Quantity:
Set
Piston Ring Style:
C
Connecting Rod Length:
6.000"
Piston Material:
Hypereutectic Aluminum
Piston Style:
Flat Top w/ 2 valve reliefs
Compression 58cc =:
11.9 : 1
Compression 64cc =:
10.9 : 1
Compression 76cc =:
9.6 : 1
Piston Diameter:
-
Stroke:
3.75
Wrist Pin Diameter:
.9272
Piston Weight:
425
Wrist Pin Weight:
145
KB Chevy 383 Hypereutectic Pistons, Flat Top, 6.0 Rod

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Info

Keith Black Hypereutectic pistons are favored for their improved power and reduced scuffing. The unique design & manufacturing processes combine to produce a rigid piston, which will rock less in the bore improving ring seal. These T-5 heat treated pistons also offer reduced thermal expansion, which allows you to run tighter clearances and allows the piston rings to seal better and minimize blow-by.

  • 390 Hypereutectic alloy
  • Fully machined crowns and valve reliefs
  • Drilled oil drain backs
  • Full floating wrist pins
  • Triple wound spiral locks
  • Reflective alloy allows 2% power increase
  • Quench dome technology minimizes deterioration
  • Zero deck quench designs
  • Lightweight wrist pins

For S/B Chevy 383 c.i. (4.000" bore x 3.75" stroke).

Ring Style Chart (GIF)

474-122 Instructions (PDF)

Item Details

C/R 58cc=11.9, 64cc=10.9, 76cc=9.6
Piston/Pin Weight: 570 g
Rod Length: 6.0", Ring Style: C

Specs

  • Comp Height 5.7" Rod -  1.433
  • Comp Height 6.0" Rod -  1.13
  • Pin Diameter -  0.9272

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